
GAPS versus human judgment
• Comparison of accuracy of triage nurses and GAPS
• Prospective study of 1,838 ED attendances
• Of these, 766 (41.7%) were admitted
• Triage staff asked to estimate probability of admission (VAS)
• Nurses were only accurate in predicting admission when they
were very confident of the outcome (92.4%) but accuracy was
poor in the majority of cases (68.8% accurate)
• When the nurses were less confident, GAPS was significantly
more accurate and better calibrated